CN208591702U - A kind of coke oven flue gas dry cleaning processing unit - Google Patents
A kind of coke oven flue gas dry cleaning processing unit Download PDFInfo
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- CN208591702U CN208591702U CN201821112338.6U CN201821112338U CN208591702U CN 208591702 U CN208591702 U CN 208591702U CN 201821112338 U CN201821112338 U CN 201821112338U CN 208591702 U CN208591702 U CN 208591702U
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Abstract
The utility model provides a kind of coke oven flue gas dry cleaning processing unit.The utility model method, it include: superfine powder feed system, mixing desulphurization system, dust pelletizing system, mixing denitrating system and exhaust system, superfine powder feed system is used to for the desulfurizing agent after grinding being transported in flue reactor, and mixing desulphurization system is for tentatively removing the SO in flue gas2, including flue reactor and for further removing the SO in flue gas2Gray back reactor, dust pelletizing system is used to remove the dust in flue gas, and the Desulphurization that will filter out is recycled back to gray back reactor recycling, mixing denitrating system include for the flue gas after dedusting heat-exchanger rig, ammonia gas supplying device and provide the Benitration reactor of flue gas and ammonia reaction environment, heat recycling that exhaust system is generated for heat exchanging device and for the exhaust gas after desulphurization denitration to be discharged.The utility model process flow is simple, and occupied area is small, and dust, waste heat are recycling, operating cost that is efficient and reducing system.
Description
Technical field
The utility model relates to filed of flue gas purification more particularly to a kind of coke oven flue gas dry cleaning processing units.
Background technique
Coke oven flue exhuast gas desulfurization denitration technology is started late, and is at present following several than more typical treatment process: first
Semi-dry desulphurization, then SCR denitration, i.e., first sodium carbonate semi-dry desulphurization have taken off and exhaust gas are improved temperature by afterburning mode after sulphur
Degree meets the temperature requirement of denitration, carries out SCR denitration, but there is waste of energy for such technology, land occupation is big, invests high ask
Topic；Using NaHCO3Dry desulfurization, dedusting, denitration remove ammonia integrated design, but that there are temperature requirements is high, equipment volume is big,
The problems such as operating cost is high, maintenance is difficult, while because to NaHCO3Fine powder is not further to be handled, and keeps desulfuration efficiency not high,
Desulfurizing agent could not be made to be fully used；First SCR denitration, then desulfurization, wet desulphurization denitrating technique, active coke desulphurizing denitration and
New charcoal base desulfurization denitration method is also because the device is complicated, land occupation is big, investment is high, energy consumption is high, operating cost is high and there are secondary dirts for it
It is the problems such as dye, extremely heavy to business burden, it is unfavorable for enterprise development.
Utility model content
According to technical problem set forth above, and provide a kind of coke oven flue gas dry cleaning processing unit.The utility model
SO2, NOx and dust device in coke oven flue gas can be effectively removed, while can also make full use of residual heat resources, ensure that catalysis
The use condition of agent, reduces operating cost, enhances the treatment effect of flue gas.The technological means that the utility model uses is such as
Under:
A kind of coke oven flue gas dry cleaning processing unit, comprising: superfine powder feed system, mixing desulphurization system, dedusting system
System, mixing denitrating system and exhaust system, the superfine powder feed system are used to the desulfurizing agent after grinding being transported to flue anti-
It answers in device, the mixing desulphurization system is for tentatively removing the SO in flue gas2, including the flue reactor and for further
Remove the SO in flue gas2Gray back reactor, the dust pelletizing system is used to remove dust in flue gas, and the desulfurization that will filter out
Ash is recycled back to the gray back reactor and recycles, and the mixing denitrating system includes for the heat exchange to the flue gas after dedusting
The Benitration reactor of device, ammonia gas supplying device and offer flue gas and ammonia reaction environment, the exhaust system are used for heat exchanging
The heat that device generates recycles and for the exhaust gas after desulphurization denitration to be discharged.
Further, the mixing denitrating system further includes flue afterburner, and the flue afterburner is for existing to flue gas
Heating heating is carried out when preset temperature is not achieved after the heat-exchanger rig.
Further, the superfine powder feed system includes desulfurizing agent storage tank, metering screw batcher and with the metering
What screw(-type) feeder was connected is used to grinding the desulfurizing agent into the grading mill for superfine powder, the desulfurizing agent storage tank and the metering spiral shell
It revolves and is equipped with gate valve I and Star-like unloader I between batcher.
Further, the mixing desulphurization system includes for supplying the air filter I of air and the air filtration
The connected conveying fan I of device I, former flue gases duct remove SO in flue gas for preliminary2Flue reactor and further removing cigarette
SO in gas2Gray back reactor, air and the superfine powder that grading mill provides be delivered to by the conveying fan I by nozzle I
The flue reactor, the original flue gases duct are connected with the flue reactor, and the flue reactor and the gray back are anti-
Device is answered to be connected, Desulphurization is delivered to the gray back reactor, the flue inside reactor by nozzle II by conveying fan II
Equipped with for by Desulphurization and the well-mixed flue static mixer of flue gas.
Further, the dust pelletizing system include sack cleaner, ash cellar, air filter II and with the air filtration
The connected conveying fan II of device II, the sack cleaner passes through gate valve II, Star-like unloader II, screw conveyor will
It follows the bad Desulphurization utilized to store to the ash cellar, an output end of ash cellar passes through gate valve III, Star-like unloader III and institute
State gray back reactor be connected, another output by gate valve IV, Star-like unloader IV will not available trash discharge, institute
It states deduster entrance to be connected with the gray back reactor, outlet is connected with the first entrance of the heat-exchanger rig.
Further, in the mixing denitrating system, the first outlet of the heat-exchanger rig and the flue afterburner phase
Even, the entrance of the flue afterburner respectively with for supplying air air filter III, with III phase of air filter
Combustion fan even is connected with fuel gas gas pipeline, the outlet of the flue afterburner and entering for the ammonia gas supplying device
Mouth is connected, and the outlet of the ammonia gas supplying device is connected with the Benitration reactor, and the Benitration reactor and the heat exchange fill
The second entrance set is connected.
Further, static mixer and denitrating catalyst are equipped with inside the Benitration reactor.
Further, the first entrance phase of the second outlet of the heat-exchanger rig and the heat exchanger (20) of the exhaust system
Even, flue gas is drained into atmosphere by regulating fan and chimney by the first outlet of the heat exchanger, the heat exchanger second into and out of
Mouth is connected with the waterpipe heated is needed respectively.
The utility model has the advantage that
1, process flow is simple, and occupied area is small, high treating effect, much higher than the emission request of current environmental protection.
2, the dust by deduster filtering is Ke Xunhuanliyong, enhances the treatment effect of system.
3, the operating cost of system is reduced while ensure that catalyst normal use by residual heat using device.
The utility model can be widely popularized in flue gas desulfurization denitration dust-removing field based on the above reasons.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the utility model coke oven flue gas dry cleaning processing unit schematic diagram.
In figure: 1, desulfurizing agent storage tank；2, gate valve I；3, Star-like unloader I；4, metering screw batcher；5, grading mill；
5a, air filter I；5b, conveying fan I；6, former flue gases duct；7, flue reactor；7a, nozzle I；8, gray back reactor；
8a, nozzle II；8b, flue static mixer；9, deduster gas approach；10, sack cleaner；10a, cloth bag；11, gate valve
Ⅱ；12, Star-like unloader II；13, screw conveyor；14, house outlet flue；15, GGH heat exchanger；16, flue afterburning
Device；16a, fuel gas gas pipeline；16b, air filter III；16c, combustion fan；17, ammonia-spraying grid；17a, ammonia enter
Mouthful；18, Benitration reactor；18a, static mixer；18b, denitrating catalyst；19, heat exchanger entrance flue；20, heat exchanger；
20a, water inlet；20b, water outlet；21, regulating fan；22, chimney；23, ash cellar；24, gate valve III；25, Star-like unloader
Ⅲ；25a, air filter II；25b, conveying fan II；26, gate valve IV；27, Star-like unloader IV；28, ash pipeline.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
As shown in Figure 1, a kind of coke oven flue gas dry cleaning processing unit, comprising: superfine powder feed system, mixing desulfurization system
System, dust pelletizing system, mixing denitrating system and exhaust system, the desulfurizing agent after the superfine powder feed system is used to grind convey
Into flue reactor 7, the mixing desulphurization system is for tentatively removing the SO in flue gas2, including 7 He of flue reactor
For further removing the SO in flue gas2Gray back reactor 8, the dust pelletizing system is used to remove dust in flue gas, and will
The Desulphurization filtered out is recycled back to the gray back reactor 8 and recycles, and the mixing denitrating system includes for after to dedusting
The heat-exchanger rig of flue gas, ammonia gas supplying device and provide the Benitration reactor 18 of flue gas and ammonia reaction environment, the row
Heat of the place system for heat exchanging device 20 to generate recycles and for the exhaust gas after desulphurization denitration to be discharged.
The mixing denitrating system further includes flue afterburner 16, and the flue afterburner 16 is used to pass through institute to flue gas
It states and carries out heating heating when preset temperature is not achieved after heat-exchanger rig.
The superfine powder feed system includes desulfurizing agent storage tank 1, metering screw batcher 4 and is fed with the metering screw
What machine 4 was connected is used to the desulfurizing agent grinding the grading mill 5 for superfine powder, and the desulfurizing agent storage tank 1 is given with the metering screw
Gate valve I 2 and Star-like unloader I 3 are equipped between material machine 4.
The mixing desulphurization system include for supply I 5a of air filter of air, with the I 5a phase of air filter
I 5b of conveying fan even, former flue gases duct 6 remove SO in flue gas for preliminary2Flue reactor 7 and further removing cigarette
SO in gas2Gray back reactor 8, the superfine powder that I 5b of conveying fan is provided air and grading mill 5 by nozzle I 7a
Be delivered to the flue reactor 7, the original flue gases duct 6 is connected with the flue reactor 7, the flue reactor 7 and
The gray back reactor 8 is connected, and Desulphurization is delivered to the gray back reactor 8, institute by nozzle II 8a by II 25b of conveying fan
It states and is equipped with inside flue reactor 7 for by Desulphurization and the well-mixed flue static mixer 8b of flue gas.
The dust pelletizing system include sack cleaner 10, ash cellar 23, II 25a of air filter and with the air filter
II 25a connected II 25b of the conveying fan, the sack cleaner 10 pass through gate valve II 11, Star-like unloader II 12, spiral shell
Rotation conveyer 13 will follow the bad Desulphurization utilized and store to the ash cellar 23, and an output end of ash cellar 23 passes through gate valve III
24, Star-like unloader III 25 is connected with the gray back reactor 8, and another output passes through gate valve IV 26, Star-like unloader
IV 27 will not available trash discharge, the deduster entrance is connected with the gray back reactor 8, outlet and heat exchange dress
The first entrance set is connected.
In the mixing denitrating system, the first outlet of the heat-exchanger rig is connected with the flue afterburner 16, described
The entrance of flue afterburner 16 respectively with for supplying air III 16b of air filter, with the III 16b phase of air filter
Combustion fan 16c even is connected with fuel gas gas pipeline 16a, and the outlet of the flue afterburner 16 and the ammonia supply
The entrance of device is connected, and the outlet of the ammonia gas supplying device is connected with the Benitration reactor 18, the Benitration reactor 18
It is connected with the second entrance of the heat-exchanger rig.Static mixer and denitrating catalyst are equipped with inside the Benitration reactor 18.
The second outlet of the heat-exchanger rig is connected with the first entrance of the heat exchanger 20 of the exhaust system, the heat exchange
Flue gas is drained into atmosphere, the second import and export point of the heat exchanger by regulating fan 21 and chimney 22 by the first outlet of device 20
It is not connected with the waterpipe heated is needed.
Specifically,
Desulfurizing agent NaHCO3NaHCO is stored in by pipeline3In storage tank 1, entered by gate valve I 2 and Star-like unloader I 3
Desulfurizing agent is quantitatively conveyed to grading mill 5 by metering screw batcher 4 by metering screw batcher 4, and grading mill 5 is by desulfurization
Agent grinds after superfine powder, to be conveyed to nozzle 7a by I 5b of conveying fan by the air from I 5a of air filter and spray into flue
In reactor 7, with by former flue gases duct 6 flue gas come into full contact in flue reactor 7, and with the SO in flue gas2Reaction,
It is removed.Subsequent flue gas enters gray back reactor 8, and in gray back reactor 8, flue gas is sprayed with through ash pipeline 28 by nozzle 8a
The Desulphurization entered is sufficiently mixed under static mixer 8b effect, and the reaction was continued, further removes the SO in flue gas2.After reaction
Flue gas through deduster gas approach 9 enter sack cleaner 10, under the action of cloth bag 10a, by flue gas dust remove,
The dust content in flue gas is set to be down to 15mg/Nm3 or less.Flue gas after dedusting enters GGH through house outlet flue 14 and exchanges heat
Device 15 exchanges heat with the flue gas after denitration, improves flue-gas temperature, meets the reaction of 18b180 DEG C of denitrating catalyst~400 DEG C
Temperature.When flue-gas temperature is unable to satisfy, heated up by the flue gas afterburner 16 on flue to flue gas.Fuel gas warp
Fuel gas gas pipeline 16a enters burner, is mixed with through III 16b of air filter by the air that combustion fan 16c is sent into
It burns in flue afterburner 16, flue-gas temperature is increased to the reaction temperature of 18b180 DEG C of denitrating catalyst~400 DEG C.Through rising
Flue gas after temperature with after ammonia entrance 17a is mixed by the ammonia that ammonia-spraying grid 17 sprays into, into Benitration reactor 18, through static state
Under mixer 18a effect, after ammonia is sufficiently mixed with flue gas, flows through denitrating catalyst 18b and decompose the nitrogen oxides in flue gas
For nitrogen and water, purified flue gas after the heat exchange of GGH heat exchanger 15, through heat exchanger entrance flue 19 enter heat exchanger 20 with by
The water heat exchange that water inlet 20a enters, hot water or steam are flowed out by water outlet 20b, are utilized, the flue-gas temperature control after exchanging heat
System is sent into chimney 22 through regulating fan 21 and is discharged at >=140 DEG C.
Contain the responseless NaHCO in part in Desulphurization3, can in order to improve the utilization rate and desulfuration efficiency of desulfurizing agent
Partial desulfurization ash is recycled.The Desulphurization that sack cleaner 10 filters down, through gate valve II 11, Star-like unloader
II 12 enter screw conveyor 13, and Desulphurization is transported in ash cellar 23 and is temporarily stored.Desulphurization in ash cellar 23 one
Lease making gate valve III 24, with conveying Star-like unloader III 25, through II 25a filtered air of air filter by conveying fan
II 25b is sent into gray back flue for Desulphurization to be sent into nozzle 8a penetrating gray back reactor 8 and participates in reacting, and improves desulfuration efficiency；
Another part Desulphurization is handled through gate valve IV 26, Star-like unloader IV 27 by outward transport.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (8)
1. a kind of coke oven flue gas dry cleaning processing unit characterized by comprising superfine powder feed system, mixing desulfurization system
System, dust pelletizing system, mixing denitrating system and exhaust system, the desulfurizing agent after the superfine powder feed system is used to grind convey
To in flue reactor (7), the mixing desulphurization system is for tentatively removing the SO in flue gas2, including the flue reactor
(7) and for further removing the SO in flue gas2Gray back reactor (8), the dust pelletizing system is used to remove powder in flue gas
Dirt, and the Desulphurization that will filter out is recycled back to the gray back reactor (8) and recycles, the mixing denitrating system include being used for pair
The heat-exchanger rig of flue gas after dedusting, ammonia gas supplying device and provide the Benitration reactor of flue gas and ammonia reaction environment
(18), heat of the exhaust system for heat exchanging device (20) to generate recycles and useless after desulphurization denitration for being discharged
Gas.
2. coke oven flue gas dry cleaning processing unit according to claim 1, which is characterized in that the mixing denitrating system
Further include flue afterburner (16), the flue afterburner (16) be used for flue gas be not achieved after the heat-exchanger rig it is pre-
If carrying out heating heating when temperature.
3. coke oven flue gas dry cleaning processing unit according to claim 1, which is characterized in that superfine powder supply system
System includes desulfurizing agent storage tank (1), metering screw batcher (4) and what is be connected with the metering screw batcher (4) be used for institute
The grading mill (5) that desulfurizing agent mill is superfine powder is stated, is set between the desulfurizing agent storage tank (1) and the metering screw batcher (4)
There are gate valve I (2) and Star-like unloader I (3).
4. coke oven flue gas dry cleaning processing unit according to claim 3, which is characterized in that the mixing desulphurization system
Including the air filter I (5a) for supplying air, the conveying fan I (5b), former that is connected with the air filter I (5a)
Flue gases duct (6) removes SO in flue gas for preliminary2Flue reactor (7) and further removing flue gas in SO2Gray back
The superfine powder that air and grading mill (5) provide is delivered to institute by nozzle I (7a) by reactor (8), the conveying fan I (5b)
State flue reactor (7), it is described original flue gases duct (6) be connected with the flue reactor (7), the flue reactor (7) and
The gray back reactor (8) is connected, and Desulphurization is delivered to the gray back by nozzle II (8a) and reacted by conveying fan II (25b)
Device (8) is equipped with inside the flue reactor (7) for by Desulphurization and the well-mixed flue static mixer of flue gas
(8b)。
5. coke oven flue gas dry cleaning processing unit according to claim 2, which is characterized in that the dust pelletizing system includes
Sack cleaner (10), ash cellar (23), air filter II (25a) and the conveying being connected with the air filter II (25a)
Blower II (25b), the sack cleaner (10) pass through gate valve II (11), Star-like unloader II (12), screw conveyor
(13) Desulphurization recycled is stored to the ash cellar (23), an output end of ash cellar (23) passes through gate valve III
(24), Star-like unloader III (25) is connected with the gray back reactor (8), and another output passes through gate valve IV (26), star
Type discharger IV (27) will not available trash discharge, the deduster entrance is connected with the gray back reactor (8), exports
It is connected with the first entrance of the heat-exchanger rig.
6. coke oven flue gas dry cleaning processing unit according to claim 5, which is characterized in that the mixing denitrating system
In, the first outlet of the heat-exchanger rig is connected with the flue afterburner (16), the entrance point of the flue afterburner (16)
Not with the air filter III (16b) for supplying air, the combustion fan that is connected with the air filter III (16b)
(16c) is connected with fuel gas gas pipeline (16a), outlet and the ammonia gas supplying device of the flue afterburner (16)
Entrance be connected, the outlet of the ammonia gas supplying device is connected with the Benitration reactor (18), the Benitration reactor (18) and
The second entrance of the heat-exchanger rig is connected.
7. coke oven flue gas dry cleaning processing unit according to claim 6, which is characterized in that the Benitration reactor
(18) internal to be equipped with static mixer and denitrating catalyst.
8. coke oven flue gas dry cleaning processing unit according to claim 6, which is characterized in that the of the heat-exchanger rig
Two outlets are connected with the first entrance of the heat exchanger (20) of the exhaust system, and the first outlet of the heat exchanger (20) passes through tune
Flue gas is drained into atmosphere, the water that the second import and export of the heat exchanger is heated with needs respectively by pressure fan (21) and chimney (22)
Pipeline is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821112338.6U CN208591702U (en) | 2018-07-13 | 2018-07-13 | A kind of coke oven flue gas dry cleaning processing unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821112338.6U CN208591702U (en) | 2018-07-13 | 2018-07-13 | A kind of coke oven flue gas dry cleaning processing unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270210A (en) * | 2019-07-18 | 2019-09-24 | 北京首创环境科技有限公司 | A kind of energy-saving biomass boiler flue gas purification system and method |
| CN110280124A (en) * | 2019-06-03 | 2019-09-27 | 江苏智道工程技术有限公司 | A kind of system adjusting dispersing gas desulfurization and dedusting for CDQ pressure |
| CN110538557A (en) * | 2019-09-04 | 2019-12-06 | 无锡市东方工业节能环保有限公司 | Desulfurization, denitrification and whitening integrated system for sintering machine |
-
2018
- 2018-07-13 CN CN201821112338.6U patent/CN208591702U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280124A (en) * | 2019-06-03 | 2019-09-27 | 江苏智道工程技术有限公司 | A kind of system adjusting dispersing gas desulfurization and dedusting for CDQ pressure |
| CN110270210A (en) * | 2019-07-18 | 2019-09-24 | 北京首创环境科技有限公司 | A kind of energy-saving biomass boiler flue gas purification system and method |
| CN110538557A (en) * | 2019-09-04 | 2019-12-06 | 无锡市东方工业节能环保有限公司 | Desulfurization, denitrification and whitening integrated system for sintering machine |
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